Andreas T Jonsson

Add support for multiple floppy drives in the SDL2 frontend.

Add support for the r2 maximum mode hardware validator.

Support suspend/resume state from a disk file.

Add support for corresponding FPU co-processor.

RIFS not working on MSDOS 6.22. Not listing any files.

EDIT on MSDOS 6.22 is not responding to keyboard.

We should not idle when app is in focus.

Need a new packet driver that does not contain 186 instructions or properer NE2000 emulation.